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digit.go

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digit.go

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// Copyright 2009 The Go Authors. All rights reserved.

// Use of this source code is governed by a BSD-style

// license that can be found in the LICENSE file.

package unicode

// IsDigit reports whether the rune is a decimal digit.

func IsDigit(r rune) bool {

if r <= MaxLatin1 {

return '0' <= r && r <= '9'

}

return isExcludingLatin(Digit, r)

}